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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 118 | if ( $this->do_concat ) { |
| 119 | /** |
| 120 | * Filter the script loader source. |
| 121 | * |
| 122 | * @since 2.2.0 |
| 123 | * |
| 124 | * @param string $src Script loader source path. |
| 125 | * @param string $handle Script handle. |
| 126 | */ |
| 127 | $srce = apply_filters( 'script_loader_src', $src, $handle ); |
| 128 | if ( $this->in_default_dir( $srce ) && ! $conditional ) { |
| 129 | $this->print_code .= $this->print_extra_script( $handle, false ); |
| 130 | $this->concat .= "$handle,"; |
| 131 | $this->concat_version .= "$handle$ver"; |
| 132 | return true; |
| 133 | } else { |
| 134 | $this->ext_handles .= "$handle,"; |
| 135 | $this->ext_version .= "$handle$ver"; |
| 136 | } |
| Line | Code |
| 150 | |
| 151 | if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) { |
| 152 | $src = $this->base_url . $src; |
| 153 | } |
| 154 | |
| 155 | if ( ! empty( $ver ) ) |
| 156 | $src = add_query_arg( 'ver', $ver, $src ); |
| 157 | |
| 158 | /** This filter is documented in wp-includes/class.wp-scripts.php */ |
| 159 | $src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) ); |
| 160 | |
| 161 | if ( ! $src ) |
| 162 | return true; |
| 163 | |
| 164 | $tag = "{$cond_before}<script type='text/javascript' src='$src'></script>\n{$cond_after}"; |
| 165 | |
| 166 | /** |
| 167 | * Filter the HTML script tag of an enqueued script. |
| 168 | * |